Boiler



(No Model.)

, S. H. JENNINGS. BOILER.

No. 430,856. Patented June 24, 189 0.

tniTnn STATES PATENT OFFICE.

SIMEON H. JENNINGS, OF DEEP RIVER, CONNECTICUT.

BOILER.

SPECIFICATION forming part of Letters Patent No. 430,856, dated June 24, 1890.

Application filed February 11, 1889. Serial No. 299,357. (No model.)

T0 at whom it may concern:

Be it known that I, SIMEON H. JENNINGS, of Deep River, in the county of Middlesex and State of Connecticut, have invented new Improvements in Boilers; and I do hereby declare the following, when taken in connection with accompanying drawings and the letters of reference marked thereon, to be a full, clear, and exact description of the same, and which said drawings constitute part of this specification, and represent, in

Figure l, a sectional front side view of a boiler embodying the invention; Fig. 2, a perspective view of one of the rings of which the wall above the base is composed; Fig. 3, a horizontal section above the coils, looking down ward.

This invention relates to an improvement in the construction of boilers specially designed for heating purposes,in which hot water is the heating medium, the object being the construction of a simple and eitective boiler, and in which a large amount of surface carryingthe water under circulation may be exposed to the lire within the boiler; and it consists in the construction of the boiler, as hereinafter described, and particularly recited in the claim.

A represents the lower or base portion of the boiler, which is usually of cylindrical char acter, provided with the usual firebox opening l3 and with an asltpit C, as usual .in cylindrical boilers. The base of the boiler extends up above the-tire and so as to surround the fire.

Above the base A several flat coils I) of tubing are arranged and supported in a horizontal plane. The inner end of each coil is turned downward and opens into the base A, E representing these connections between the respective coils and the base A. These coils lie one above another, and the outer end E of each coil is turned outward through the surrounding wall, and thence led to the radiator. Under this arrangement it is intended that the boiler shall be provided with one coil for each radiator, so that each radiator will have its own independent circuit from the base A. The boiler, the coils, and the several circuits to the radiators are filled with water in the usual manner, the return leading into the boiler near the bottom, as at G. The heat from the boiler creates the circulation in the usual manner for this class of heating apparatus, each coil deriving its own heat from the fire, and as the water passes from the base of the boiler through the coil the extreme heat comes upon the coils above the boiler, and by such extreme heat at this point increases the circulationover What occurs when the pipes lead directly from the boiler.

The surrounding wall of the coil portion of boiler is made up by a series of rings ll, corresponding to the number of coils, the height of the rings being substantially the distance between the coils. One of these rings is shown detached in Fig. 2. The ring is constructed with a notch I radially through it at one point, corresponding to the end of the coil which is to run through it, and so that one ring being laid in place the coil is applied, its end resting in the notch I. Then a second ring is applied with the notch at the point where it is desired that the end of the next coil shall pass through, and so on, successive rings being-applied as successive coils are applied and the escape or outlet located accordingly. The wall thus built up is covered with a suitable dome J, through which the products of combustion may escape.

I do not claim, broadly, a boiler embodying within it several flat coils, each comm unicating independen tly with the body of the boiler; neither do I claim an independent leader from the respective coils to different radiators; but

What I do claim is The herein-described boiler for hot-waterheating purposes, consisting of the hollow base A, surrounding the fire-box, combined with coils of tubing arranged in a horizontal plane above said base, one coil above another, the coils open through the center, the inner ends of said coils passing through said openin g downward and opening into the said base, the outer ends of the said coils extending radially through the wall of the boiler, substantially as described.

SIMEON H. JENNINGS. WVitnesscs: JOHN E. EARLE, FRED O. EARLE. 

